Exercise 7

Question 1 :

The pedogenic process associated with poor drainage and which involves the accumulation of organic matter in the upper layers of the soil is called

A). salinisation
B). gleisation
C). calcification
D). podsolisation
Answer : Option B

Question 2 :

The rock formations that cannot store groundwater are called

A). aquifers
B). aquicludes
C). perched aquifer
D). spring
Answer : Option B

Explanation :

An aquifer is an underground layer of water-bearing permeable rock or unconsolidated materials (gravel, sand, silt, or clay) from which groundwater can be usefully extracted using a water well.

Question 3 :

The planet that takes the highest time for completing a rotation is

A). Mercury
B). Venus
C). Earth
D). Pluto
Answer : Option B

Question 4 :

The Penumbra is

A). the outer portion of the moon's shadow
B). formed by the tangent that intersects between the sun and the moon
C). both (a) and (b)
D). None of the above
Answer : Option C

Question 5 :

The river situated along the border between the USA and Mexico is

A). the Rio Grande
B). the Amazon
C). the Mississippi
D). the Colorado
Answer : Option A